Flat RPP Cs-137 source

Dear Experts,

I am trying to simulate dose from a flat RPP Cs-137 source. I have made the file with all necessary cards. However, my simualtion crashes with error " Abort called from UBCHCK reason IXYZ-1 Run stopped!". I am unable go around this issue. Kindly correct me where I have gone wrong. I am attaching the files.
cs.flair (2.4 KB)
cs.inp (2.2 KB)
cs.out (1.2 KB)
cs001.err (782 Bytes)

Dear Mayank,

your USRBIN scoring has way too many bins. I was able to run with 800 bins along each axis.
The maximum number of bins can depend on the complexity of the simulation, and the scorings you are using.

Cheers,
David